Flue-cleaner for steam-boilers.



PATENTED FEB. 19, 1907.

G. PATTERSON. PLUE CLEANER FOR STEAM BOILERS.

APPLICATION FILED 0OT.30,1906.

m T N m m MAW, B r

CL GOEM A Trokzwi Y.

UNITED \STATES PATENT OFFICE.

FLUE-CLEANEH FOR STEAM-BOILERS.

Specification of Letters Patent.

Patented Feb. 19, 1907.

Application filed October 30,1906. Sean No. 341,311.

T 0 all whom it may concern: v

Be it known that I, GILBERT PATTERSON, a citizen of the United States, residing at Duluth, in the county of St. Louis, State of Minnesota, have invented certain new and useful Improvements in Fine-Cleaners for Steam-Boilers, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to improvements in flue-cleaners for steam-boilers, and has for its object to provide a simple device for this purpose, and especially one whose'discharge and radius of action may be moderated by the operator from the front of the boiler.

In drawings forming part of this specification, Figure 1 is a side elevation of a marine boiler fitted with my improved flue-blower, showing a broken portion of the boiler-shell removed to exhibit the blower in operation. Fig. 2 is a side elevation of the elbow-joint which operates within the boiler. Fig. 3 is a longitudinal section of the inner elbow-joint, and Fig. 4 is a vertical section of the joint at the opposite end of the blower-pipe.

Referring now to the drawings, 1 represents the steam-boiler of ordinary construction, in one end of which is formed the combustion-chamber 2, the lower portion of which communicates with the furnace of the boiler and the upper ortion with the longitudinal fines 3, which at their u per ends communicate with the stack-breec ing 4.-

It is found in practice that steam discharged from within the combustionchamher out through the lines is 131161111081 'eil'ective way of cleaning the latter and that if this is done frequently the steam-generating capacity of the boiler is greatly increased. To accomplish this inthe simplest and most eflicient manner possible, I install a small pipe 5 Within the centermost flue and which projects at the operating end out through the stack-breeching 4 and from there to comflexible connection to the munieate' by a For this steam-supply 22 of the boiler.

steam connection I have shown the pipes 6,

-, 7, and 8, they being connected by elbows or the tube.

, flexible joints as are in common use at the points 9, 10, and 11, so

as to admit of the 5 bein 2 joint 12 is provided adjacent the elbow 9, in which the end of the pipe 5 is securely fastened, and this being constructed on the principle of a regular pipe union will admit of the pipe 5 being revolved, which is pipe drawn back and forth within.

accomplished by means of the hand-wheel 13. 'lo the opposite end of the pipe 5, which extends within the combustion-chamber, is attached the short piece of pipe 14, having perforations 15 11110118 side thereof through which the steam is designed to pass and discharge within the lines or against the inner walls of the combustion-chamber.

The pipes 5 and 14 are connected by means of a peculiarly-constructed elbowjoint, as shown in detail in Figs. 2 and 3, it consisting of two hollow'metal parts 16 and 17, made to cooperate with each other, their inner contacting faces being smooth and held together by means of the through-bolt 18, which will make practically a steam-tight joint and yet admit of an angular movement of the pipe 14 in the (liILlO1l shown in Fig. 2, but is prevented from straight line with the pipe 5 in the Ot'llODdirecuon by the engagement of the lugs 17 and 19. Thus it will be seen that the pipe 14 can only attain an angular position relative to the pipe 5 in a certain direction, and that angle is always formed in a direct line with the perforations 15 in the pipe 14, so that if the pipe 5 is shoved through the line till the pipe 14 extends \VlLlllI]. the combuslion-chamher and if turned With the perforations facing downward said pipe 14 will drop of its own accord to an angle of ninety degrees to the pipe 5, with the perforations 15 facing the ends of the boiler-fines. Now if steam is admitted within the pipe 5 the discharge of same through the perforations within the pipe 14 will have a tendency to throw it back to its original position parallel with the pipe 5. However, it can be pre vented from doing so by the operator extending the pipe 5 still farther within the combustion-chamber, so that the end of the pipe 14 will bear against the back wallof the chamber, as shown in Fig. 1. By this arrangement it will be seen that the direction of the discharge of steam from the pipe 14 may be varied to suit the operator, as it frequently happens that there are a number of tubes out of a true radius from the center one, in which is located the pipe 5. Again, if sleam is admittedto the lower as soon as the pipe 14 is fully within the combusiion-chamber and before it is sufficiently far to touch the back wall thereof then it will attain a horizontal position by the backward action of the discharging steam through the perforations, and if rcvolved in this position by means of the handmoving beyond a wheel 13 the steam will be discharged against the circumferential walls of the combustion chamber and effectually clean them.

I have shown a globe-valve 20 as being installed in the pipe 8 for admitting or shutting oil the steam and for convenience of access provide the valve with a depending hand- 5 rod 21.

From the foregoing it will be seen that the )ipe 5 is longitudinally movable and rode ahie, carrying at one end a handle for manual operation andat the same end has a llexible and rotatable supply connection with the steam-supply, while its other end is-providcd f with a swinging steam-operated pipe H, which may be termed a "jet-orifice pipe. It will also be observed that the swinging jetorifice pipe has i s orifices at the side thereof opposite to the direction in which it swings under the influence of the impact of the escaping steam. It will also be observed that the length of the swinging jet-orifice pipe is less than the longitudinal depth of the fireboX, whereby the said swinging pipe is permitted to assume a horizontal POSlklOll under the influence of the escaping steam when the pipe 5 is moved outward and that the impact of 'the escaping steam will hold the said swinging pipe in'a horizontal position as the pipe 5 is rota.ed, and thus cause the escape of the steam to impinge against all portions of the inner wall of the fire-box as the pipe 5 is rotated.

Having thus described my invention, what I claim, and desire to sectreby Letters Patent, is

I. A boiler-flue-cleaning device, comprising a longitt.dinallyanovable and rotatable pipe adapted to pass through the fh e of a boiler and of a length greater than the length F of the line, whereby one end projects to the outside of the boiler, and the inner end projects beyond the inner end of the llie, and a swinging jet-orifice pipe connected and in communication with the inner end of the said pipe.

2. A boilerfh.'e-cleaning device, comprising a longitudinally-movable and rotatable pipe adapted to pass through the ll; c of a boiler, and ofa length greater than the length of the line, a,handle connected to the otter end of the pipe for rotating and moving it longitudinally, and a swinging jet-orifice pipe in coimnunication with and connected to the inner end of the said longitudinally movable pipe.

3. A boiler-llue-cleaning device comprising a pi e adapted to be passed through the flue of the boiler and of a length greater than the length of the line, a jet-orifice pipe swiv eled to the inner end of the longitudinal pipe, 1

the jet-orifice pipe having orifices on the side thereof opposite to the direction of swinging h movement of the orifice-pipe, for the p1.rpose described.

at. A boiler-flue-cleaning device, comprising a pipe adapted to be projected into the combtsiion-chamber of the boiler, a swinging jet-orifice pipe in communication with and connected to one end of the said pipe, the oriliccs in the swinging pipe being on the side thcrcol opposite the lites of the boiler for projecl'ing the steam thereinto.

A boiler-lite-cleaning dcvice, comprising a longiti.dinally-movable and rotatable pipe adapted to be projected into the combustion-chamber of a boiler, a swinging jet-orifice pipe connected with the inner end of said pipe and in commtnication therewith, whereby the same pipe is adapted to be moved by the impact of the steam and by engagement with one ol" the Walls of the firebox.

6. A [hie-cleaning device, ,comprising a pipe adapted to have its inner end projected into the comb. stionchan'ibcr of a boiler, a swinging jct-orilic e pipe connected to and in conmt nication with the inner end of said pipe, the jct-orilice pipe having its orifices on the side thereol opposite to its direction of movement 1 nder the hill: ence of the steam escaping therefrom, and stops adapted to hold the swinging pipe in a horizontal position, or the p rpose described.

7. A lhe-clcaning device, comprising a pipe adapted to have its inner end projected into the comb: stion-chamber of a boiler, a sninging jet-orifice pipe connected to and in comm; nicalion with the inner end of the pipe, the s inging pipe having its orifices on one side thereof [or swinging the pipe in one direction by the impact ol" 1 hesteam escaping therefrom, and nteans l'or arresting the movement ol the swinging pipe against the influence ol the escaping steam.

S. A boiler-H1 t.( l(ttnll1g device, comprising a pipe adapted to have its inner end projected into the llre of a boiler, a swinging jetori'lice pipc connected to and in commtnicalion with the inner end of said pipe, the ori- 'l ices being in the side of the pipe for swinging it under theinih ence of the steam, the said pipes having abutting members for the purpose of arresting the movement of the swinging pipeunder the influence of escaping ,steam.

' in testimony whereof I affix my signature in presence of two witnesses.

GILBERT PATTERSON. Witnesses S. GEO. S'rEvnNs, DONALD MCLENNAN. 

